Ok, I'm here to tell you and others, when doing FW updates on these routers...I HIGHLY recommend using IE or FF as your router management tool and don't use Chrome. Just the other day a guy bricked his 825 router while doing a FW update using Chrome. Were seeing other issues on the 865 forum for general router management while using Chrome. The guy refuses to try IE or FF. In most cases any browser should theoretically work on these routers and generally do. However, my experiences over the years in working with different browsers, I've come to the conclusion and knowing of what Mfrs test in there development of there products, using OS based and included browsers is a standard and should be used in FW updates. There are too many varioable and updates to Chrome that probably and do impact how Chrome works with devices web pages and doing FW updates.
Most testing and development is done using OS based installed browsers like IE for MS and Safari for Apple. These browsers are tested a lot. Chrome, FF and others probably are however not to the extent of what MS and Apple are and only tested as a courtesy and on a limited basis. Yes Chrome, FF and Opera are major browsers and favorites among the population, however that doesn't mean that Mfrs are testing them to the level we'd like.
So lets not take risks in FW updates and our devices. I highly recommend for doing any FW updates on these routers or any product as a matter of fact, Use IE first and foremost. FF and a 2ndary backup.
After that, using any browser for general router management should be good. Not trying to dissuade any one from using there preferred browser at all, just when it comes to FW updates, lets use something that has been tested well.